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For those wondering how Twitter co-founder Jack Dorsey is going to make his encore work, he has released numbers.

Dorsey's second company, Square, allows merchants and small businesses to process credit cards with a small attachment added to their smartphone or tablet computer.

Monday Square released data that shows the company has signed up 800,000 merchants who have processed over $2 billion in transactions in the past year since the company began handing out free credit card processing attachments.

Square also announced that it is ending a practice where the company used to hold all transactions over $1,000 in a week for a short period before releasing the cash.